
Interpretation: To calculate the value of standard Gibbs free energy of reaction
The relative tendency of given metal carbonates to decompose is to be stated also.
Concept introduction:
The change of Gibbs free energy to form one mole of a substance from its constituent elements when all the substances in the standard form is known as standard Gibbs free energy of formation
The standard Gibbs free energy of reaction

Answer to Problem 75GQ
The value of standard Gibbs free energy of reaction
The value of standard Gibbs free energy of reaction
The value of standard Gibbs free energy of reaction
The relative tendency of given carbonates to decompose is written as,
Explanation of Solution
If the value of standard Gibbs free energy of reaction
The value of standard Gibbs free energy of reaction
Given:
Refer to the appendix L for the value of standard Gibbs free energy of formation
The
The value of standard Gibbs free energy of formation
The value of standard Gibbs free energy of formation
The value of standard Gibbs free energy of formation
Substitute these values in equation (1) to calculate the value of standard Gibbs free energy of reaction
Therefore, the value of standard Gibbs free energy of reaction
The chemical reaction of decomposition of calcium carbonate
The value of standard Gibbs free energy of formation
The value of standard Gibbs free energy of formation
The value of standard Gibbs free energy of formation
Substitute these values in equation (1) to calculate the value of standard Gibbs free energy of reaction
Therefore, the value of standard Gibbs free energy of reaction
The chemical reaction of decomposition of barium carbonate
The value of standard Gibbs free energy of formation
The value of standard Gibbs free energy of formation
The value of standard Gibbs free energy of formation
Substitute these values in equation (1) to calculate the value of standard Gibbs free energy of reaction
Therefore, the value of standard Gibbs free energy of reaction
The relative tendency of metal carbonates to decompose is depended upon the value of standard Gibbs free energy of reaction
Therefore, magnesium carbonate relatively decomposes faster than calcium carbonate and barium carbonate and calcium carbonate decompose faster than the barium carbonate. Hence, the relative tendency of given carbonates to decompose is written as,
The value of standard Gibbs free energy of reaction
The value of standard Gibbs free energy of reaction
The value of standard Gibbs free energy of reaction
The relative tendency of given carbonates to decompose is written as,
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Chapter 21 Solutions
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